Paper board cask



R. E. BLACKBURN PAPER BOARD CASK 2 Sheets-Sheet 1 March 10, 1959 Filed May 2l. 1956 March 10, 1959 R. BLACKBURN 2,876,945

PAPER BOARD CASK Filed May 2l, 1956 2 sheets-sheet 2 Jfa United Sttes Pate PAPER BOARD CASK Richard E. Blackburn, Amelia, Ohio, assignor to Container Corporation of America, Chicago, Ill., a corporation of Delaware Application May 21, 1956, Serial No. 586,079

Z Claims. (Cl. 229-45) This invention relates to a paper board cask for storing and shipping tobacco and other produce and has to do with the unit comprising the'cask and the load of prodnce therein as well as with the cask itself.

My invention is directed to a paper board cask which may be produced at comparatively small cost and is of adequate mechanical strength to withstand the abuse to which it may be subjected in use. The cask of my invention comprises a tubular paper board body and end closure caps therefor secured upon the body by means comprising interengaging elements eifective for restraining the closure caps against movement relative to the body in either direction lengthwise thereof while holding the caps seated tightly upon the ends of the body. More particularly, the securing means comprises oppositely directed interengaging rims on the caps and on the body so related that they are in endwise contact elective for restraining the caps against movement relative to the body lengthwise thereof, and a securing band drawn tightly about the rims so as to maintain them in compression radially of the body and prevent disengagement of the rims. A further and important feature of my invention is the provision of interior headers within the body of the cask above and below the load of produce therein, the headersI being free from the body for movement relative thereto lengthwise Athereof and serving to transmit the weight of the load of produce within the body to the closure caps in such manner as to reduce likelihood of rupture or tearing thereof. Further objects and advantages of my invention will appear from the detail description.

In the drawings:

Figure 1 is an elevational view, partly broken away, of a cask and a load of produce and headers therein embodying my inventio-n;

Figure 2 is a top plan View of the loaded cask of Figure 1;

Figure 3 is a fragmentary sectional view, on an enlarged scale, of the loaded cask of Figure l, taken substantially on line 3 3 of Figure 1;

Figure 4 is a plan view, on an enlarged scale, of a blank from which the body -of the cask may be formed;

Figure 5 is a plan view of one of the closure caps embodying my invention;

Figure 6 is a plan view of one of the headers used in the loaded cask embodying my invention;

Figure 7 is a plan View of a modified form of header;

Figure 8 is an elevational view, partly broken away, of the upper portion of a modified form of cask embodying my invention;

Figure 9 is a fragmentary plan view, on a reduced scale, of one of the closure caps for the cask of Figure 8;

Figure 10 is a fragmentary sectional View, taken substantially yon line 10-10 of Figure 8, on an enlarged scale; and

Figure l1 is a plan view of a second modified form of header.

The cask comprises a substantiallyA cylindrical body 10 2,876,945 Patented Mar. 10, 1959 closed at each end by a cap 11. The body 10 is formed from two or more substantially rectangular blanks 12 of comparatively heavy or thick solid libre board, each blank being cut and scored to provide a plurality of vertically disposed panels 13, a securing tab 14 extending from one end of blank 12 and flaps 15 extending from the ends of the panels 13. The blanks 12 are disposed end to end with the securing tab 14 of one blank underlying the end portion of the next adjacent blank and secured thereto by stitching or stapling, as shown in Figure 4, in which the second blank is indicated in dotted lines. The blanks are bent into substantially circular form with the tab 14 at the free end of one of the blanks 12 disposed in underlying relation to the end portion of the other blank and secured thereto by stitching or stapling. That produces the substantially cylindrical body 10 of the cask. The aps 15 are then bent or folded outwardly into parallelism with the body 10 so as to provide therewith, at each end of the body, a substantially continuous rim with aps 15 disposed in substantially concentric spaced relation to the adjacent end portion of the body and defining therewith a channel opening inwardly lengthwise of the body. Each of the caps 11 comprises a disc cut from comparatively thick or heavy solid libre board and flaps 16 extending radially outward from the periphery of the disc and integrally attached thereto along fold lines 17. Each of the aps 16 is provided with a transverse fold line 18 spaced somewhat nearer its outer end than its inner end for a purpose to be described presently.

After the body 10 of the cask has been formed in the manner above described, with the flaps 15 thereof bent or .ffolded over so as to extend along the end portions of body 10 as in Figures l, 2 and 3, a cap is placed upon the end of body 1l), the flaps 15 of body 10 are swung outward and the aps 16 of cap 11 are folded about flaps 15, and the interfolded flaps 15 and 16 are then folded nwardly against the body 10, as will be clear from Figure 3 in which the steps of folding the ilaps 15 outward and folding the ilaps 16 about aps 15 is indicated in dotted lines. The flaps 16 of cap 11 are folded along the fold lines 1S about flaps 15 of body 10, as will be understood from what has been said, each of the folded cap aps 16 then comprising'an outer arm 19 and an inner arm 20 extending about ap 1S of body 10. Referring further to Figure 3, it will be noted that the upper edge of arm 20 contacts flap 15 at the juncture thereof with body 10 and the lower edge of ilap 15 contacts the cap liap 16 at the juncture of the arms 19 and 20 of flap 16. The flaps 15 of body 10 provide a substantially continuous channel member, in conjunction with the adjacent end portion of body 10, which opens inwardly lengthwise of body 10, and the folded flaps r16 of the cap 11 provide a substantially continuous channel member or rim which opens outwardly of body 10 lengthwise thereof, i. e. toward the ends of the body. The two channel rims thus provided are interengaged as above described and each thereof has contact with the other rim effective for restraining the cap against movement in either direction lengthwise of body 10 relative thereto. After the rims of the cap and the body have been interfolded and interengaged in the manner above described, a securing band 21, conveniently of metal strapping, is pulled tightly about the outer arms 19 of aps 16, the ends of the band 21 being secured together by a connector 22 of known type and in a known manner. The band 21 compresses the elements of the interengaging ribs radially of body 10 and effectively guards against possible disengagement thereof.

After a cap has been secured upon one end of body 10 of the cask in the manner above described, the cask is turned with its closed end down, for reception of the material or producevto be placed therein. Before load- ICC 3 .ing the.l cask a lower header-is placed therein upon the upper face of the then bottom cap closing the bottom of body 10. Assuming tobacco or analogous produce .f'i'stobefplaced-in the cask, aeheader su'chas Vthatshown in'ligure preferably-sfused. AIt comprises. arim 23 of,;substantial vwidth andaninner body portion secured --inftherrim Iformed,` in theheader shown, of two strips l' '24:o f1wood of substantial thickness 'disposed in crossing .relation-one.perpendicular to the other and secured to :the rim 23. The headerZS thus produced is of open work constructionand therim 23 projects a substantial .distancel beyond the strips'24 lengthwise of bodyl and Y.toward theadjacent closurecap` 11. `Afterthe header ruhassbeen lplaced .within'thebody upon the lower vcap ;11,2the produce, such las leaf tobacco t is Yloaded into 1:-the-bodyv 10 of theV Cask onto the'headerythecross pieces off-.which are of -1 adequatestrength to -supporbthe load :fof tobacco. .The body 10h is substantially? filled with the "tobacco and thenanfppper'headeris placed uponthe load lof tobacco, 'i after' which ifthe -top=closure itis sez-fcured to the'upper. end of bodytinthe mapnervpre- -vxouslyfdescribei thuscompletingthe loaded cask. The headers 125 yare free from body '-10 for relative movement :lengthwise thereof and *tit the vinterior thereof `'snugly but not tightly. If the Lloaded lcasl; is lifted :lengthwise without a supporbeneath it, the weight of zthe. load is `transmitted'by the lowerheader through rim .23 to the bottom closure cap `adjacent thesinterengaging rims of the cap and theca'sk-body,to-which the load is =transmitted under compression lengthwise of the Vcasi: tbody Sothatthe interengaging rimlstructure is capable :of supporting the load without risk` of rupture or tearing of the parts thereof. That avoids transmission of-the '.load tothe central areas ofthe cap, which might frac- `:'ture. ortear under the :weight of theload of Vproduce within the cask. ltthas been assumed, for purposes of description, that the produce within vthe cask is tobacco -or other produce requiring ventilation, for which ythe openwork headers 25 preferably-have been described as used, it being noted that'each of the closure caps 11 Lisl provided with-ventilation openings 27. If the produce placed in the cask does not requireventilation, a solid vheaden'such as the header `28 s hown in Figure l7 may L'be. used. `The' header 28 may be in the form of afdisc v of 4wood of substantial thickness capable Ioffsupporting lthe-weight offthe load, orof any other suitable material which will 4support the load,` and `is of -a kdiameter to fttthe interior'of the'body 10 of-the cask. As will be tunderstood, two=headers preferablyare used, one at the E'bottom of' the loadand'the other atthe top of the load, A`the-.header-:at the bottom of thecask bod-y l'serving to ldistr'ibuteftheweight of the load throughoutthe full exi'tent-of the-upperface offthe'lowerclosure cap 11 so fthat the-weightofthe'loadlistransmitted to the rim porrtion, of the Cask body and the closure cap thereby guard- -`ingfagainst rupture or tearing of the cap 'in substantially the same manner as above described.

"The modified form of'cask of Figures 8 to l0 corn- -prises body formed from twovormore blanks 12a cut and scored to provide vertically" disposed panels `13a, a' securing tab 14a extending from one'endofblanlr` 12a yand aps 15a, one of 'which is-shownin'Figure 10,exvtendingfrom theends of panels'rlSa. The blanks 12a zare Vdisposed end -to end with the securing tab 143 ofone l'blank' overlying the end portion-'of`V the ynext Vadjacent blank and secured thereto bystitching -or stapling and -preferablyealso by adhesive, indicated 'bystippling 14h, g4asvshownin"Figure-8. Theffiaps l'are'folded out. 'wardly intorparallelism with the body 10? so' asL to providel therewith, at each end' thereof,asubstantially conltinuous frimr'dispose'dfin vsubstantially concentric spaced 'relation tov the'adjacentfendportionoi'tlaebody-10a and defining therewith a Ichannel-opening-inward1y length- Wisetofthe body, Aas before.

Eaeh--end ofthe-body 19.` is-c1osed by acap Ilaeornprising a disc, preferablycutfrom thersamermaterialns the body, and aps 16EL and 16b extending radially outward from the peripheryof the disc and integrally attached thereto along fold lines 17a, the aps 16a and 16h being preferably, though not necessarily, arranged in alternating relation. .Each of the aps 16fL and 16b is provided with a transverse fold line 1Sa spaced somewhat nearer its outer end than its inner end. Each of the flaps 16h is .further provided, at itsmidportion, with twoparallellengthwise slits 16c extendingacross and approximately an equal distance above and below the fold line 18a. The slits 16c dene between them a web element 16d integrally attached at its ends toiflaps 16b along `fold lines ,162. Preliminary to applying the closure cap Illl to the end of body 10a a securing member, conveniently `a steel wire 209', is threaded through the slits 16a so as to extend across the outer faces of elernents 16d, the inner faces of aps-16b:and; t he outer faces of apszlda. The cap. 11a, with the :wirefqZe threadcd therethrough as iabove, risl then-mounted on Uthe -end of the body lila: -in 'thermannen previously described, with the-deps' lo@ and'16b interfolded -withthefdaps 15@ and theelements l'folded outwardlydtoward the adjacent end ofbody 10a and disposedv adjacent the inner ends of flaps 51511, as shown in Figure 10. The cap y11Uv is then pressed :iirrnly onto theqend of body 16a Vand the wireZta is pulled tight -about b odylileunder substantial tension, by suitable known means, --and its ends are twisted together, ett-720', Aor secured together Ain any suitable known manner. The ,Cap ,112' isthns `tightly secured upon body Naso as to guard :effectively against dislodgement of the cap.

After a.. cap lla" has been secured upon one Jend of bodyilltlf, the latteris then placed upon asuitable-support with the closed end down, for loading. "Preliminary to loading a lower header is placedwithinuthecask upon the upper face of the then bottom cap. The headerrnay be either of the vformsshown in-Figures 6 and 7, or -rnay be of theform shown in Figure ll comprising a rim 232L and three crossed strips of wood 24 secured to each othera11d to rim 23a providing therewith the header 2.5*`

'When'the cask has'been filled, an upper head is placed uponthe top of the l-oadand a closure `cap-Haris then secured upon theupper end of the cask in the manner above described. The cap '11n is shown `as notprovided Vwith Ventilation openings, whichrnayfnot be necessary in certain cases,lbut may be provided-,with such openings if necessary or desired, as will be understood.

As will be seen from a comparisonfofligures 3 land 10,;in'eacl11tormvof thefcask ,of my invention shown by way offexaniplthe closure caps haveilaps respectively comprising an outer arm extending inwardlyof the Cask body-inproxirnity to the corresponding body ap and an inner arm extending outwardly of the body and'tting between the `corresponding -body flap and the adjacent portion of thelbody, theilaps of the cap being secured about the body by a band secured under tension about the body and exerting pressure radially thereof.

It will be understood that changes in detail maybe resorted to without departing'fronrthe tield and scope of my invention, and l intend to include all suchvariations, as'fall Awithin the scope of the appended claims, in this applicationin which'tne preferred'fornbonly otf my invention has been disclosed.

lclaim:

lf-ln a cask of tobacco and analogous produce, a tubular paper board body having at eachvend an integralexterior' rirn-v extending inwardlyA of said'body-lengthv wise thereof and disposed in substantially concentric spacedrelation thereto, a closure cap at each-end of saidbody seating thereon andi-raving an integral rim of channel cross section comprising a radially outer arm atrthe outer-*facenti thefcorresponding-body rim .and a radially inner arm integrally attached at its axiallyinncr end -to the corresponding lend of said-outer-arm, -said inner arm tting snugly between said body and body rim with its axially outer edge contacting said body rim at the juncture thereof with said body effective for restraining said cap against movement away from said body, a securing band at each end of said body secured under tension about said body and cap rims efrective for maintaining them under compression radially of said body, and top and bottom headers within said cask body between said body of produce and said caps, said headers respectively comprising `a unitary rim and a body portion secured therein, said header rim having an exterior diameter approximately the same as the interior diameter of said cask body and being free from the latter, the rim of each header extending axially thereof beyond the body portion thereof toward the adjacent cap for seating on the inner face of the latter in proximity to the rim thereof and the body portion of the header being eiective for supporting the body of produce out of contact with the corresponding closure cap.

2. In a paper board eask, a tubular body closed at its bottom and provided at its top with integrally attached downwardly extending exterior aps spaced from said body, a top closure cap seating on the top of said body land having integral aps respectively comprising a downwardly extending arm and an upwardly extending arm attached at its lower end to the lower end of said downwardly extending arm, said downwardly extending arms of said cap flaps directly seating for their full length on the outer faces of said body aps in face to face contact therewith and being restrained thereby against transverse buckling inwardly toward said body and said upwardly extending arms of said cap flaps fitting for their full length snugly between said body flaps and the corresponding portions of said body in face to face contact therewith and being restrained thereby against transverse buckling both inwardly toward and outwardly away from said body, said upwardly extending arms of said cap flaps contacting at their upper ends said body aps at the junctures thereof with said body and said body flaps contacting at their lower ends said cap aps at the junctures of said arms of the latter ilaps whereby said upwardly extending arms of said cap flaps and said body aps provide compression members resisting movement of said closure cap away from said body and said downwardly extending arms of said cap aps provide tension members resisting movement of said closure cap away from said body, and a securing band drawn tightly about said outer arms of said cap aps elective for maintaining all of said aps under pressure contact radially of said body.

References Cited in the tile of this patent UNITED STATES PATENTS 

